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RFC 1334

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Network Working Group
Request for Comments: 1334

B. Lloyd
L&A
W. Simpson
Daydreamer
October 1992

### PPP Authentication Protocols

#### Status of this Memo

This RFC specifies an IAB standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "IAB Official Protocol Standards" for the standardization state and status of this protocol. Distribution of this memo is unlimited.

#### Abstract

The Point-to-Point Protocol (PPP) [1] provides a standard method of encapsulating Network Layer protocol information over point-to-point links. PPP also defines an extensible Link Control Protocol, which allows negotiation of an Authentication Protocol for authenticating its peer before allowing Network Layer protocols to transmit over the link.

This document defines two protocols for Authentication: the Password Authentication Protocol and the Challenge-Handshake Authentication Protocol. This memo is the product of the Point-to-Point Protocol Working Group of the Internet Engineering Task Force (IETF). Comments on this memo should be submitted to the ietf-ppp@ucdavis.edu mailing list.

#### Table of Contents

1. Introduction

1.1. Specification Requirements
1.2. Terminology

2. Password Authentication Protocol

2.1. Configuration Option Format
2.2. Packet Format

2.2.1. Authenticate-Request
2.2.2. Authenticate-Ack and Authenticate-Nak

3. Challenge-Handshake Authentication Protocol

3.1. Configuration Option Format
3.2. Packet Format

3.2.1. Challenge and Response
3.2.2. Success and Failure

Security Considerations
References
Acknowledgments
Chair's Address
Author's Address

Original text document

Next: 1. Introduction

Connected: An Internet Encyclopedia
RFC 1334